<template>
  <div>
    <!-- 面包屑 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item :to="{ path: '/goods' }">商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片区域 -->
    <el-card>
      <!-- 内推提示 -->
      <el-alert
        title="添加商品信息"
        type="info"
        center
        show-icon
        :closable="false"
        style="margin-bottom: 15px"
      >
      </el-alert>
      <!-- 步骤条 -->
      <el-steps
        :space="200"
        :active="activeIndex - 0"
        finish-status="success"
        align-center
        style="margin-bottom: 25px"
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <!-- tab栏区域 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100"
        label-position="top"
      >
        <el-tabs
          v-model="activeIndex"
          :tab-position="'left'"
          :before-leave="beforeLeaveTabs"
          @tab-click="tabsClick"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="cateList"
                :props="props"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              v-for="item in manyTableData"
              :key="item.attr_id"
              :label="item.attr_name"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                  border
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              v-for="item in onlyTableData"
              :key="item.attr_id"
              :label="item.attr_name"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <!-- 上传按钮 -->
            <el-upload
              :action="uploadURL"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :on-success="handleSucess"
              :headers="headers"
            >
              <el-button size="small" type="primary">点击上传</el-button>
              <div slot="tip" class="el-upload__tip">
                只能上传jpg/png文件，且不超过500kb
              </div>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <quill-editor v-model="addForm.goods_introduce" />
            <el-button type="primary" @click="submiForm">提交</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- 图片预览弹窗 -->
    <el-dialog
      title="图片预览"
      :visible.sync="previewDialogVisible"
      width="50%"
      @close="previewDialogVisible = false"
    >
      <img :src="previewPath" style="width: 100%; margin: 0px" />
    </el-dialog>
  </div>
</template>
<script>
import _ from "lodash";
export default {
  data() {
    return {
      activeIndex: 0,
      addForm: {
        goods_name: "",
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        pics: [],
        attrs: [],
      },
      addFormRules: {
        goods_name: [
          { required: true, message: "商品名称不能为空", tirgger: "blur" },
          { min: 2, max: 15, message: "字符长度在2-15之间", trigger: "blur" },
        ],
      },
      props: {
        value: "cat_id",
        label: "cat_name",
        children: "children",
      },
      cateList: [],
      manyTableData: [],
      checkList: [],
      onlyTableData: [],
      /* 请求链接 */
      uploadURL: "http://127.0.0.1:8888/api/private/v1/upload",
      headers: {
        Authorization: window.sessionStorage.getItem("token"),
      },
      previewPath: "",
      previewDialogVisible: false,
      goods_introduce: "",
    };
  },
  created() {
    this.getCateList();
  },
  methods: {
    /* 获取查询对象 */
    async getCateList() {
      const { data: res } = await this.$http.get("/categories");
      if (res.meta.status !== 200) {
        return this.$message.error("获取商品分类失败");
      }
      this.cateList = res.data;
    },
    /* 级联选择器选中项变化，会触发这个函数*/
    handleChange() {
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = [];
        //this.$message.error("必须选择三级分类");
      }
      // console.log(this.addForm.goods_cat);
    },
    /* 点击切换tab事件 */
    beforeLeaveTabs(activeName, oldActiveName) {
      //console.log("点击了" + activeName);
      // console.log("从之前的tab过来的" + oldActiveName);
      if (oldActiveName === "0" && this.addForm.goods_cat.length !== 3) {
        this.$message.error("请先选择商品分类！");
        return false;
      }
    },
    /* tab点击事件 */
    async tabsClick() {
      console.log(this.getCateId);
      if (this.activeIndex === "1") {
        const { data: res } = await this.$http.get(
          `categories/${this.getCateId}/attributes`,
          {
            params: { sel: "many" },
          }
        );
        if (res.meta.status !== 200) {
          return this.$message.error("获取动态参数失败！");
        }
        res.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(" ");
        });
        this.manyTableData = res.data;
        console.log(this.manyTableData);
      } else if (this.activeIndex == "2") {
        const { data: res } = await this.$http.get(
          `categories/${this.getCateId}/attributes`,
          {
            params: { sel: "only" },
          }
        );
        if (res.meta.status !== 200) {
          return this.$message.error("获取动态参数失败！");
        }
        console.log(res.data);
        this.onlyTableData = res.data;
      }
    },
    /* 点击图片预览事件 */
    handlePreview(file) {
      console.log(file);
      this.previewDialogVisible = true;
      this.previewPath = file.response.data.url;
    },
    /* 点击删除事件预览事件 */
    handleRemove(file) {
      console.log(file);
      const filePaht = file.response.data.tmp_path;
      const index = this.addForm.pics.findIndex((item) => {
        item.pic === filePaht;
      });
      this.addForm.pics.splice(index, 1);
      console.log(this.addForm);
    },
    /* 监听图片上传成功！ */
    handleSucess(response) {
      console.log(response);
      if (response.meta.status !== 200) {
        return this.$message.error("上传失败！");
      }
      this.$message.success("上传成功！");
      const picObj = { pic: response.data.tmp_path };
      this.addForm.pics.push(picObj);
      console.log(this.addForm);
    },
    /* 提交数据 */
    submiForm() {
      console.log(this.addForm);
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) return;
        const form = _.cloneDeep(this.addForm);
        form.goods_cat = this.addForm.goods_cat.join(",");
        this.manyTableData.forEach((item) => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(" "),
          };
          this.addForm.attrs.push(newInfo);
        });
        this.onlyTableData.forEach((item) => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals,
          };
          this.addForm.attrs.push(newInfo);
        });

        form.attrs = this.addForm.attrs;
        console.log(form);
        const { data: res } = await this.$http.post("/goods", form);
        if (res.meta.status !== 201) {
          return console.error("添加商品失败");
        }
        this.$message.success("商品添加成功！");
        this.$router.push("/goods");
      });
    },
  },
  computed: {
    getCateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2];
      }
      return null;
    },
  },
};
</script>
<style lang="less" scoped>
/deep/ .el-step__title {
  font-size: 13px;
}
</style>
